Slewing Bearing, Slewing Ring, Slewing Circle manufacturer / supplier in China, offering Excavator Cat 322c Swing Circle 110-7166 Slewing Bearing Slewing Ring, Excavator Hitachi 2054 Slewing Ring 9169646 Part Number Gear Ring, 9169646 Hitachi Slewing Ring Used for 160c LC/ PC9085 Slew Gear Bearing and so on.